negavite response as error?

[Madottati]

I am using Automotive Diagnostic Command Set, and control an ECU via UDS.

As the ECU sends a negative response (0x7F), the Diagnostic Service.vi returns an error code -8127. I don't find this code anywhere, and basically it is not important, as I get the response from the ECU in the "data out" array of the Diagnostic Service.vi.

So I have 2 questions:

1. What is the error code -8127?

2. Can I set up the diagnostics so that a negative response doesn't trigger an error?

Madottati

[OEMa]

Hi Madottati,

The error code -8127 is a user defined error code. As reminder, following code ranges are user defined: -8999 through -8000, 5000 through 9999 and 500,000 through 599,999

You can try to debug the VI and find out where the error code is generated or just ignore it.

Marc

[Madottati]

Hi,

yes I found it out. The 127 corresponds to the 0x7F negative response, and the VI returns it as an error. I will handle it in my VI.

Thanks